https://paradigmchange.me/wp/urine/?fbclid=IwAR0gSmwx1jE9hZKZ1YGRCIDXIqGFIL4iguyK0M6mI4F2GocS4JcsrL5Qkuc All the above (or almost all) reference ELISA based systems [Real Time etc.] or relatives. We had some Q&A on this in that...